① 化学成分(ASTM A240,%)
| 元素 | 范围 |
|---|---|
| C | ≤0.15 |
| Si | ≤0.75 |
| Mn | 5.5–7.5 |
| P | ≤0.060 |
| S | ≤0.030 |
| Cr | 16.0–18.0 |
| Ni | 3.5–5.5 |
| N | ≤0.25 |
② 力学性能(ASTM A240)
| 性能 | 要求 |
|---|---|
| 抗拉强度 Rm | ≥ 655 MPa |
| 屈服强度 Rp0.2 | ≥ 260 MPa |
| 伸长率 A | ≥ 40% |
| 硬度 | ≤ 241 HBW |
③ 可供尺寸(标准范围)
- 厚度:0.3–3.0 mm
- 宽度:≤ 1219 mm
- 形态:卷材 / 薄板 / 中厚板 / 圆片 / 分条带材(可按需定制)
- 表面:2B · BA · No.1 · No.4 · HL · 8K(可按需定制)
④ 适用标准
ASTM A240 · JIS G4305 · GB/T 3280
⑤ 典型应用
室内装饰、炊具内衬、低腐蚀环境五金件、家电外壳、干燥区域包覆
⑥ Substitution and selection advice
Cheaper but lower corrosion resistance. Not recommended for wet, coastal or chemical environments. Only a substitute for 304 in dry indoor areas.
Chemical and mechanical data quoted from the public ASTM A240 standard. Available sizes are standard ranges; the contract and technical agreement prevail.
